NetFabric

Author Mermaid diagrams inside ```mermaid fenced code blocks in markdown files (README, AGENTS.md, PR descriptions, chat responses). Covers every stable, non-experimental diagram type: flowchart, sequence, class, state, entity relationship, user journey, Gantt, pie, quadrant, requirement, gitGraph, block, packet, kanban, XY chart, event modeling. Use when: picking a diagram type; writing correct fence syntax; documenting architecture, processes, timelines, schemas, or data relationships compactly for humans and agents alike, since a diagram conveys structure in far fewer tokens than prose. DO NOT USE FOR: the Mermaid Live Editor or mermaid.ai chat (fence syntax only); experimental or beta diagrams (swimlanes, mindmap, timeline, sankey, architecture, radar, treemap, venn, ishikawa, wardley, cynefin, treeView, ZenUML, C4); general Markdown formatting (use markdown-best-practices).

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Choose and tune which AI model a custom agent, subagent, or squad node should use. USE FOR: picking a model by task capability tier (general-purpose coding/writing, fast/cheap, deep reasoning/debugging, multimodal); efficiency-first vs. capability-first starting strategies; tuning an effort/reasoning-effort parameter instead of switching models; call cadence vs. provider prompt-cache TTL; cost-tier ranking and cost ceilings; cross-provider or cross-model-family diversity for independent/adversarial review; per-harness model field syntax and resolution order (GitHub Copilot CLI, Claude Code, VS Code custom agents); extending this framework to a new harness. DO NOT USE FOR: authoring the rest of an agent's frontmatter or prompt body (use copilot-cli-custom-agents, claude-code-custom-agents, or the target harness's own skill); designing squad topology (use agent-graph-orchestration); SKILL.md authoring (use create-skill).

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Produce, consume, validate, and navigate Open Knowledge Format (OKF) bundles. Use when: creating an OKF knowledge bundle; converting catalogs, wikis, schemas, metrics, runbooks, or APIs to OKF; parsing or indexing OKF; designing an OKF producer or consumer; validating OKF v0.2 conformance; traversing index.md files and concept links; minimizing agent context while reading OKF documentation; handling provenance, trust, lifecycle, sources, or Attested Computation concepts. DO NOT USE FOR: OpenAPI schemas; generic Markdown documentation with no OKF bundle; knowledge graphs that do not use OKF files; runtime packaging or serving protocols not defined by OKF.

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Create polished Python terminal user interfaces and skill scripts with Textual and Rich. Use when: building TUI apps; adding interactive terminal workflows; designing tabs, progress bars, checkboxes, radio buttons, tables, charts, forms, status views, keyboard navigation, color, or responsive terminal layouts; making Python scripts visually appealing and informative. Every skill script defaults to a TUI on an interactive terminal and provides --no-tui for deterministic stream output. DO NOT USE FOR: browser GUIs; desktop-native GUIs; plain shell commands with no interactive workflow; non-Python applications.

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Abstract math for quaternion algebra (hypercomplex numbers ℍ). USE FOR: implementing quaternion multiplication (Hamilton product, non-commutative); conjugate, norm, and inverse; unit quaternions on S³ as double cover of SO(3); rotating 3D vectors with quaternions; understanding why q and −q represent the same rotation; normalizing after operations; constructing rotation quaternions from axis-angle. DO NOT USE FOR: converting between rotation representations (use 3d-rotation-theory); slerp/lerp interpolation (use interpolation-on-manifolds); basic vector cross/dot products (use vector-algebra).

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Abstract math for reference ellipsoids used in geodesy. USE FOR: computing semi-minor axis from flattening; eccentricity and eccentricity squared; first and second eccentricity; arithmetic mean radius; radii of curvature in the meridian and prime vertical; ellipsoid surface area; ellipsoid volume; understanding WGS84/GRS80 parameters; implementing Ellipsoid<T> types. DO NOT USE FOR: geodetic coordinate bounds (use geodetic-coordinate-bounds); datum transformations (use helmert-datum-transformation); map projections.

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Search files and code with ripgrep (`rg`) after preferring available code-indexing tools. Use when: finding literal text or regex matches; listing searchable files; filtering by glob or file type; checking whether `rg` is installed; installing ripgrep on macOS, Linux, or Windows; replacing legacy text-search commands in agent workflows. ALWAYS prefer an available fresh code index for symbols, references, call paths, architecture, and impact analysis, then use `rg` for text search. NEVER use `grep`. DO NOT USE FOR: structural code questions already answered by an available index; modifying matched files; searching binary formats without a text preprocessor.

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Convert data to/from TOON (Token-Oriented Object Notation) for lower-token LLM context. Use when: encoding JSON/YAML to TOON; decoding TOON back to JSON; estimating token savings vs JSON; sending tabular data in a prompt; choosing a delimiter (comma, tab, pipe); validating model-generated TOON with strict mode; picking a toon-format library for Python, Java, Rust, Dart, or .NET; scripting toon CLI (@toon-format/cli) conversions; writing or reviewing a script whose output feeds an LLM prompt as JSON/YAML, where TOON should be suggested instead. Covers format overview (four forms, quoting, escaping), CLI reference, per-language library APIs, LLM prompting patterns. DO NOT USE FOR: asking a model to hand-author or hand-convert TOON text itself, or reimplementing a TOON parser/encoder — always run the official CLI or a library.

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Abstract math for trigonometric functions: definitions, domains, ranges, key identities, and inverse functions. USE FOR: implementing sin/cos/tan/cot/sec/csc; implementing arcsin/arccos/arctan/atan2/acot/asec/acsc; validating input domains for inverse trig; applying Pythagorean and angle-sum identities; choosing atan vs atan2; precision near domain boundaries. DO NOT USE FOR: angle unit conversions (use angles-and-circular-arithmetic); coordinate system conversions (use coordinate-system-conversions); rotation representations (use 3d-rotation-theory).

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Abstract math for vector algebra in 2D and 3D Euclidean space. USE FOR: implementing vector operations (add, subtract, negate, scalar multiply/divide); dot product and geometric interpretation; 3D cross product; 2D pseudo-cross product (scalar z-component); vector magnitude and normalization; angle between two vectors; linear interpolation; checking zero/unit/finite vectors. 2D is a special case of 3D with z=0. DO NOT USE FOR: quaternion operations (use quaternion-algebra); rotation representations (use 3d-rotation-theory); coordinate system conversions (use coordinate-system-conversions).

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